3D printed polarisers for THz spectral range

3D printed polarisers for the terahertz (THz) fre-quency range have been investigated in this paper. The fused deposition modelling (FDM) technology allows cost-effective access to passive optical elements, especially for the sub- THz radiation range. In addition, it enables the use of different element base materials and customization. The performance of polarisers has been simulated, and the manufactured elements have been tested in different angular positions for a given frequency and a wide range of frequencies for the selected angles. The obtained results allowed for forming constructive conclusions about the material and fill factor of the polarisers that should be used.